A general description is given of what is now known as the Mount Warning Shield Volcano. Three distinct geomorphological features are represented-the central elevated mass, the erosion caldera, and the dissected outer remnants. The latter two features are treated with respect to their general geology and geomorphology.
A mechanism of shield formation is proposed, and the suggested evolutional development of the land form is traced from the early stages to the present day representation.
A brief survey is made of the evidence relating to the regional setting and age of the shield.